<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<Viewport3D>
<Viewport3D.Camera>
<PerspectiveCamera Position="0,1,10" LookDirection="0,-1,-10" />
</Viewport3D.Camera>
<ModelVisual3D>
<ModelVisual3D.Content>
<Model3DGroup>
<DirectionalLight Direction="0,0,-1" />
<DirectionalLight Direction="3,2,2" />
<GeometryModel3D>
<GeometryModel3D.Geometry>
<MeshGeometry3D Positions="-1,1,0 1,1,0 -1,-1,0, 1,-1,0"
Normals="0,0,1 0,0,1 0,0,1 0,0,1"
TextureCoordinates="0,0 1,0 0,1 1,1"
TriangleIndices="0,2,3 0,3,1" />
</GeometryModel3D.Geometry>
<GeometryModel3D.Material>
<DiffuseMaterial>
<DiffuseMaterial.Brush>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Color="Red" Offset="0" />
<GradientStop Color="Yellow" Offset="1" />
</LinearGradientBrush>
</DiffuseMaterial.Brush>
</DiffuseMaterial>
</GeometryModel3D.Material>
</GeometryModel3D>
</Model3DGroup>
</ModelVisual3D.Content>
</ModelVisual3D>
</Viewport3D>
</Page>
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